_:n3145deb4537b4d00850aec711c4daa50xb16
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"There is no specific setting to enable OEM unlock on a Samsung J4. However, enabling the Developer options menu may make the OEM unlock option visible. To do this, go to Settings > About phone > Software information > More and tap the Build number seven times. Once the Developer options menu is unlocked, go to Settings > Developer options and enable the OEM unlock option."
<https://theusblog.net/how-do-i-get-rid-of-frp-on-samsung-j4/>